// ECB/SIS Public License, version 1.0, document reference SIS/2001/116
//
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module org.sdmx.stores.xml.v2.structure.keyfamily
{
	//import org.sdmx.model.v2.base.SDMXArtefact;
	//import org.sdmx.model.v2.structure.keyfamily.KeyDescriptor;
	//import org.sdmx.model.v2.structure.keyfamily.GroupKeyDescriptor;
	//import org.sdmx.stores.xml.v2.structure.ISDMXExtractor;

	/**
	 * Extracts Group out of SDMX-ML structure files.
	 * 
	 * @author Xavier Sosnovsky, Anthony Morel
	 * 
	 * @todo 
	 * 		o AttachmentConstraintRef
	 */ 
	export class GroupExtractor implements ISDMXExtractor {
		
		/*==============================Fields================================*/
		
		private var _dimensions:KeyDescriptor;
		
		private namespace structure = 
			"http://www.SDMX.org/resources/SDMXML/schemas/v2_0/structure";		
		use namespace structure;
		
		private namespace structure21 = 
			"http://www.sdmx.org/resources/sdmxml/schemas/v2_1/structure";		
		use namespace structure21;
		
		/*===========================Constructor==============================*/
		
		constructor(dimensions:KeyDescriptor) {
			super();
			_dimensions = dimensions;
		}
		
		/*==========================Public methods============================*/
		
		/**
		 * @inheritDoc
		 */
		public extract(items:XML):SDMXArtefact {
			var group:GroupKeyDescriptor = new GroupKeyDescriptor(items.@id);
			for each (var dimension:XML in items.DimensionRef) {
				group.addItem(_dimensions.getDimension(String(dimension)));
			}
			return group;
		}
		
		/**
		 * @inheritDoc
		 */
		public extract21(items:XML):SDMXArtefact {
			var group:GroupKeyDescriptor = new GroupKeyDescriptor(items.@id);
			for each (var dimension:XML in items.GroupDimension) {
				group.addItem(_dimensions.getDimension(dimension.DimensionReference.Ref.@id));
			}
			return group;
		}
	}
}